During his 105-day training period, Crowe has been "taking in roughly 2400 cal/ 2600 cal incl all beverages." He said he's also been taking supplements including "multi-vitamins, selenium, glucosamine, endo-trim and fish oil."

"I've been working out from, like, 5 a.m. to 7 p.m. for two months now," Montag told US Weekly magazine at a pool party in Las Vegas over the weekend. "I've been working out really hard because I had this pool party and I was like, I have to be in shape. And I was actually a lot overweight. It was the most I've ever been because I've kind of been in hiding eating pie with my husband and puppies, so I needed to get back in shape."

The 5' 2'' reality star, first known for her role on MTV's The Hills, says she is down to 103 pounds, dropping 27 pounds after hitting a personal high of 130 this year. Montag said she took a year off from the gym after her marathon of at least 10 plastic surgery procedures in late 2009.

"My breasts, because they're so big, really needed some time," she explained. "Sometimes I get shooting pains, but I hear that's normal."

Montag dramatically reshaped her face and body in a marathon plastic surgery session, which included breast implants, a brow lift, botox, a nose job revision, fat injections in her cheeks, a chin reduction, neck liposuction and having her ears pinned back.

In a November 2010 interview with ABC News' Cynthia McFadden, Montag said she felt like she'd become a prisoner in her own made-over body.

"Sometimes I wish I could go back to the original Heidi," she said. "I don't want the biggest boobs in the world and, to be honest, I would take them out and downsize them but I don't want to go under the knife again. I feel like I'm stuck with them now."

After much media scrutiny, Montag admitted that she was addicted to plastic surgery and believed that the grueling procedures and recovery weren't worth the outcome.

"I hope that people really hear what I'm saying about plastic surgery, and I hope they really hear that I'm saying I would take it back," she said. "I almost risked everything, all my relationships and myself, for vanity."